Bamboo-plastic composite material and preparation process thereof

Abstract

The invention discloses a bamboo-plastic composite material which is characterized by comprising bamboo powder, polyethylene and additives according to the mass ratio of (20-60):(70-35):(10-5). The bamboo powder is pulverized into ultra-fine powder with 350-500 meshes. The additives include one or multiple of compatibilizers, lubricants and coupling agents. The polyethylene is pulverized into particles with the diameters ranging from 1mm to 1.5mm. The invention further provides a preparation process of the bamboo-plastic composite material. The preparation process includes steps of (1), treating the bamboo powder; (2), preparing materials and mixing the materials; and (3) granulating. The bamboo-plastic composite material has characteristics of the polyethylene and bamboos, has good damp-proof, anticorrosion and moth-proof properties, and has high strength, ductility and hardness and good secondary processing performance. By the preparation process, scraps and chips of the bamboos which cannot be used in the past can be pulverized and recovered for reutilization, wastes are recycled, and good economic benefits are achieved.

Description

technical field [0001] The invention belongs to packaging materials and the production technology of the packaging materials, in particular to bamboo-plastic composite materials and the preparation technology thereof. Background technique [0002] Packaging materials involve paper materials, plastics, metals, glass ceramics, wood and other materials, accounting for a large part of the world's total material consumption, and the garbage problem generated by packaging waste has become an important part of environmental pollution. The packaging industry has used biomass materials such as wood, cardboard, corrugated cardboard, and pulp molding to make industrial packaging and living containers, but plastics are not easy to degrade, paper materials are easy to absorb moisture, have low stiffness and strength, and wood is bulky and easy to mold Change, etc., these shortcomings limit their application and development in the packaging field. People's demand for effective use of res...

AI Technical Summary

Problems solved by technology

However, untreated bamboo fiber contains a large number of hydroxyl groups and is hydrophilic. When mixed with hydrophobic plastics, there is a relatively large interfacial energy difference, and the interfacial bonding between the two is weak.

In addition, a large number of hydroxyl groups in bamboo fibers are easy to form hydrogen bonds, which makes bamboo fibers agglomerate, resulting in uneven dispersion in the polymer, resulting in low mechanical properties of bamboo-plastic composites.